Pump



' P. F. HOPKINS AND 0. F. nEvoLLD.

PUMP.

APPLICATION PILED oc.24,1921..

Patented July 25, 1922.

Paralsu orrica.

PUMP.

i Specication of Letters Patent. Patented July 25, 1922.

Application ned october 24., 1921. seriaiNo. 509,931.

To al? whom t may concern.: l l i Be 1t known that we, RICHARD F. HOPKINS and ORIAN F.-DEvoLLD, citizens of the United States, residing at Bartlesville, in the county of Washington and State of Oklahoma, have invented certain new and useful Improvements in Pumps, of which thel following is' a specification.

This invention relates lto pumps for oil wells and it comprises a pump casing or shell, a working barrel arranged in the lower portion thereof, a traveling tube, a valve arranged in said barrel, and a floating tube surrounding the upper portion of said travelin tube, whereby the oil delivered from sald traveling tube is caused to pass around the lower end of the floating tube and deposit sand contained therein.

In the present invention, we provide an oil pump in which the sand delivered to the pump barrel with the oil is prevented from lodging on the cups and destroying them. The floatin casing and lis tube protects the barrel and keeps the floating sand from lodgingin the valve tube or cups.

A further advantage of the present in vention is the provision of a construction Vwherein acast barrel may be employed which will not be readily broken.

A further objectof the invention is the provision of a construction employingA a floating tube having perforations in its lower' end through which the oil passes.

When the level of sand extends above the` perforations, the pressure in the valve tube will lift the floating tube and release it from the sand. f

In 'the accompanying drawings, we have shown one embodiment of the invention. In this showing: C

Figure 1 1s a vert-icalsectional view,

Figure 2 is a similar view ofthe lower end of the pump on an enlarged scale,

Figure 3 is a similar view of the upper end on an enlarged scale, and,`

Figure 4 is a transverse horizontal sectional view 0n line 4 4 of Figure 3.

Referring to the drawings, the pump cpmprises a main outer shell 1. The lower end of the shell is threaded for the reception of a casting2, to which a lower outer shell l3 is secured. A casting 4 is arranged at the upper end of the outer shell. A bottom casting 5 is secured to the lower end of the lower outer shell. This casting is provided tube is arranged within the witha central opening 6. A valve cage 7 is supported on a shoulder Siofmed in the casting and this cage is adapted to receive a ball valve 9. A working barrel 1() is supported in the casting 5. The working barrel is preferably formed of cast metal. As shown, the working barrel extends upwardly beyond the casting 2 and the casting is providedwith 'a circumferential rib 11 adapted to engage the barrel to hold it lin place. A traveling tube 12 is arranged within the working barrel.v This tube is provided with a traveling valve 13 on its lower end. As shown, the tu'befis adapted to receive a coupling member 14 to which the valve 13 is connected. The

'traveling valve is provided with valve cups 175. The coupling 14 is provided with a valve seat on its upper face for the reception of a ball valve 16. The upward movement of the valve is limited by a pin 17. /The ,upper end of the tube is provided with a able packing is provided at the point where the plunger rod passes through the floating tube. As shown, the plunge-r rod is surrounded by a packer body 24 which supports a packing gland 25 having suitable packing 26 arranged therein. A casting 27 is secured in the end of the floating tube, and the packer body is secured to this casting by means of a packer spring 28.4 A coupling 29 is arranged beneath vthe spring, the coup-- ling being so shaped to permit a packer cup 30 to be arranged as shown. The partsareC 100 retained inposition by means of a nut 31.

In operation, the upward movement of the traveling tube and valve in the workingy barrel. creates suction in the lower end and raises the valve 9 from its seat, permitting oil .to flow into the lower end of thev working barrel. 16 and 19 are opened, permitting the o'il toV passl from the interior of -the working barrel to the interior of the floating tube. Thence, the oil flows downwardly as indicated by the arrows on Figure 1 of the draw-l On the downward stroke, the valves 1 main outer shell or in, raising the passes ythrough the perforations in end of the floating tube into the casing. The provision of a tube independent of the movable parts permits the tube to adjust itself according ings, and the lower to the sand lodging at the bottom thereof.

' su'bj oined claims.

I Having thus described our invention, we claim: A l. In a pump for oil wells, anouter casing, a working barrel arranged in the lower ortion thereof, a traveling tube mounted there in, valves arranged in said barrel and tube, and a floating tube arranged in said casing and surrounding the upper `portion of said working barrel.

A 2. In a pump for oil wells, an outer casing lowbr portion thereof, a member mounted tube creates a pressure therea Working barrel arranged in the in saidoasing, and forming a guide for said barrel, a traveling tube mounted in said barrel, valves arranged in said barrel and said tube, and a floating tube normally resting on said guide member and surrounding the upper portion of said barrel.

3. In a pump for oil wells, an outer casing, a working barrel arranged in the lower portion thereof, la member mounted in said casing, and forming a guide for said barrel, a traveling tube mounted in said barrel, valves arranged in said barrel and said tube, and a floating tube guide member and surrounding the upper portion of said barrel.-

i. In a pump for oilwells, an outer oas-l ing, a working barrel arranged in the lower portion thereof, a traveling tube mounted therein, valves arranged in said barreland tube, a floating tube arranged in said easing and surrounding the upper portion of said working-barrel, and means for supporting said floating tube when a normal pressure exists therein.

In testimony whereof We afiix our signatures in Vpresence of two witnesses.

RICHARD F. HOPKINS. ORIAN F. DEVOLLD. 'VVitnessesx W. B. MAXWELL, O. C. LUEKER.

normally resting on said 

